CN216346362U

CN216346362U - Waste heat recovery device of thermal power factory

Info

Publication number: CN216346362U
Application number: CN202123161836.4U
Authority: CN
Inventors: 牛东清; 白进杰; 武继琳; 苗全芳; 宋晶
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-04-19
Anticipated expiration: 2031-12-15

Abstract

The utility model discloses a waste heat recovery device of a thermal power plant, which comprises a heat exchange tube, wherein an inner tube is arranged inside the heat exchange tube, an outer tube is arranged outside the heat exchange tube, the bottom of the right side of the heat exchange tube is communicated with an air inlet tube, the top of the left side of the heat exchange tube is communicated with flue gas purification equipment, the bottom of the left side of the outer tube is communicated with a water inlet tube, the top of the right side of the outer tube is communicated with a water outlet tube, the bottom end of the inner tube is communicated with the water inlet tube through a branch tube, the top end of the inner tube is communicated with the water outlet tube through a branch tube, a wall cleaning mechanism is arranged inside the heat exchange tube and comprises a scraping ring A, the scraping ring A is sleeved on the surface of the inner tube, the outer side of the scraping ring A is fixed with a scraping ring B through a support rod, and the outer side of the scraping ring B is contacted with the inner wall of the heat exchange tube. The utility model solves the problem that the cleaning of the interior of the device in the prior art is also very inconvenient, so that the smoke dust is accumulated for a long time to form a smoke dust wall, and the heat recovery efficiency is influenced.

Description

Waste heat recovery device of thermal power factory

Technical Field

The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery device of a thermal power plant.

Background

Thermal power generation is a power generation mode which utilizes heat energy generated by combustible materials during combustion and converts the heat energy into electric energy through a power generation power device, thermal power generation is a main power generation mode in China, coal resources in China are abundant, 10.9 million tons of coal are produced in 1990, wherein the coal for power generation only accounts for 12%, and thermal power generation still has great potential.

Also there are a lot of heats along with tail gas and discharge in the thermal power, the resource has seriously been wasted, though can realize the purpose that tail gas utilized among the prior art, but most do not carry out filtration treatment with tail gas, just so can cause environmental pollution, and the inside clearance of device among the prior art is also very inconvenient simultaneously, leads to the long-term gathering of smoke and dust to form the smoke and dust wall, influences heat recovery efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a waste heat recovery device of a thermal power plant to solve the technical problem.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a waste heat recovery device of thermal power factory, includes the heat exchange tube, its characterized in that: the inside of heat exchange tube is provided with the inner tube, the outside of heat exchange tube is provided with the outer tube, the bottom intercommunication on heat exchange tube right side has the intake pipe, the left top intercommunication of heat exchange tube has flue gas purification equipment, the left bottom intercommunication of outer tube has the inlet tube, the top intercommunication on outer tube right side has the outlet pipe, the bottom of inner tube is linked together through branch pipe and inlet tube, the top of inner tube is linked together through branch pipe and outlet pipe, the inside of heat exchange tube is provided with wall cleaning mechanism.

Preferably: the wall cleaning mechanism comprises a scraping ring A, the scraping ring A is sleeved on the surface of the inner pipe, a scraping ring B is fixed on the outer side of the scraping ring A through a supporting rod, and the outer side of the scraping ring B is in contact with the inner wall of the heat exchange pipe.

Preferably: and a steel cable is fixed on the outer side of the scraping ring A and is connected with the inner pipe through two limiting rings.

Preferably: the two ends of the steel cable penetrate through the heat exchange tube and extend to the outside of the heat exchange tube, the heat exchange tube is provided with a through hole matched with the steel cable, and the two ends of the steel cable are fixed with pull blocks.

Preferably: the flue gas purification equipment is fixed with the heat exchange tube through the mounting bracket, and the left side of the flue gas purification equipment is communicated with the air pump.

Preferably: the top of the heat exchange tube is in a closed state, and the bottom of the heat exchange tube is provided with a valve.

The utility model has the beneficial effects that:

1. according to the utility model, through the arrangement of the inner pipe and the outer pipe, the heat exchange area is greatly increased, so that the heat exchange efficiency is increased, and the recovery rate of waste heat is ensured;

2. the steel cable drives the scraping ring A and the scraping ring B to move up and down, and the scraping ring A and the scraping ring B respectively scrape off smoke dust on the outer wall of the inner pipe and the inner wall of the heat exchange pipe 1, so that the formation of the smoke dust wall is avoided, the heat conduction performance of the heat exchange pipe and the inner pipe is reduced, and the heat exchange effect is reduced.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a front cross-sectional view of the present invention;

fig. 3 is a schematic structural view of a scraper ring a and a scraper ring B according to the present invention.

Reference numerals: 1. a heat exchange pipe; 2. an inner tube; 3. an outer tube; 4. an air inlet pipe; 5. a flue gas purification device; 6. an air pump; 7. a water inlet pipe; 8. a water outlet pipe; 9. a branch pipe; 10. a mounting frame; 11. a valve; 12. a scraping ring A; 13. a strut; 14. a scraping ring B; 15. a steel cord; 16. a limiting ring; 17. and (5) pulling the block.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood, the utility model is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the utility model, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1-3, a waste heat recovery device of thermal power factory, including heat exchange tube 1, the inside of heat exchange tube 1 is provided with inner tube 2, the outside of heat exchange tube 1 is provided with outer tube 3, the bottom intercommunication on heat exchange tube 1 right side has intake pipe 4, the left top intercommunication of heat exchange tube 1 has flue gas cleaning equipment 5, flue gas cleaning equipment passes through mounting bracket 10 and is fixed mutually with heat exchange tube 1, and flue gas cleaning equipment 5's left side intercommunication has air pump 6, the left bottom intercommunication of outer tube 3 has inlet tube 7, the top intercommunication on outer tube 3 right side has outlet pipe 8, the bottom of inner tube 2 is linked together with inlet tube 7 through branch pipe 9, the top of inner tube 2 is linked together with outlet pipe 8 through branch pipe 9, the top of heat exchange tube 1 is the enclosed condition, and the bottom of heat exchange tube 1 is provided with valve 11.

During the specific use, at first be connected intake pipe 4 with the flue gas discharge pipeline, then with inlet tube 7 intercommunication cold water source, cold water gets into outer tube 3 and inner tube 2 inside through inlet tube 7, the inside cold water of outer tube 3 and inner tube 2 and the inside high temperature flue gas heat transfer of heat exchange tube 1, get into gas cleaning equipment after the flue gas temperature reduces, purify the back and discharge, and cold water temperature risees after the heat transfer, can be used to boiler and city heating after discharging through outlet pipe 8, setting through inner tube 2 and outer tube 1, very big improvement heat transfer area, thereby improve heat exchange efficiency, guarantee the rate of recovery of waste heat.

EXAMPLE 2

As shown in fig. 1-3: in the case where the other portions are the same as those of embodiment 1, this embodiment is different from embodiment 1 in that: the inside of heat exchange tube 1 is provided with wall cleaning mechanism, wall cleaning mechanism includes scraping ring A12, the surface of inner tube 2 is located to scraping ring A12 cover, and scraping ring A12's the outside is fixed with scraping ring B14 through branch 13, and the outside of scraping ring B14 contacts with the inner wall of heat exchange tube 1, scraping ring A12's the outside is fixed with cable wire 15, cable wire 15 is connected with inner tube 2 through two spacing rings 16, the both ends of cable wire 15 all run through heat exchange tube 1 and extend to its outside, set up the perforation with cable wire 15 looks adaptation on the heat exchange tube 1, the both ends of cable wire 15 all are fixed with pull block 17.

During the specific use, because contain a large amount of smoke and dust in the flue gas of vigor power plant emission, when carrying out the heat transfer, the smoke and dust in the flue gas can be attached to the inner wall of heat exchange tube 1 and the outer wall of inner tube 2, if not in time clear up, the smoke and dust can form a thick smoke and dust wall, not only can lead to the pipe blockage, the existence of smoke and dust wall simultaneously, can reduce the heat conductivility of heat exchange tube 1 and inner tube 2, lead to the heat transfer effect to reduce, waste heat recovery is thorough inadequately, the during operation only needs two pull blocks 17 of untimely pulling, drive scraping ring A12 and scraping ring B14 through cable 15 and reciprocate, scraping ring A12 and scraping ring B14 say respectively that the smoke and dust scrapes on inner tube 2 outer wall and the heat exchange tube 1 inner wall, then will scrape through the valve of heat exchange tube 1 bottom the smoke and dust discharge can.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a waste heat recovery device of thermal power factory, includes heat exchange tube (1), its characterized in that: the inside of heat exchange tube (1) is provided with inner tube (2), the outside of heat exchange tube (1) is provided with outer tube (3), the bottom intercommunication on heat exchange tube (1) right side has intake pipe (4), the left top intercommunication of heat exchange tube (1) has gas cleaning equipment (5), the left bottom intercommunication of outer tube (3) has inlet tube (7), the top intercommunication on outer tube (3) right side has outlet pipe (8), the bottom of inner tube (2) is linked together with inlet tube (7) through branch pipe (9), the top of inner tube (2) is linked together through branch pipe (9) and outlet pipe (8), the inside of heat exchange tube (1) is provided with wall cleaning mechanism.

2. The waste heat recovery device of the thermal power plant according to claim 1, wherein: the wall cleaning mechanism comprises a scraping ring A (12), the surface of the inner pipe (2) is sleeved with the scraping ring A (12), a scraping ring B (14) is fixed to the outer side of the scraping ring A (12) through a support rod (13), and the outer side of the scraping ring B (14) is in contact with the inner wall of the heat exchange pipe (1).

3. The waste heat recovery device of the thermal power plant according to claim 2, characterized in that: and a steel cable (15) is fixed on the outer side of the scraping ring A (12), and the steel cable (15) is connected with the inner pipe (2) through two limiting rings (16).

4. The waste heat recovery device of the thermal power plant according to claim 3, wherein: the two ends of the steel cable (15) penetrate through the heat exchange tube (1) and extend to the outside of the heat exchange tube, a through hole matched with the steel cable (15) is formed in the heat exchange tube (1), and pull blocks (17) are fixed at the two ends of the steel cable (15).

5. The waste heat recovery device of the thermal power plant according to claim 1, wherein: the flue gas purification equipment is fixed with the heat exchange tube (1) through the mounting frame (10), and the left side of the flue gas purification equipment (5) is communicated with the air pump (6).

6. The waste heat recovery device of the thermal power plant according to claim 1, wherein: the top of the heat exchange tube (1) is in a closed state, and a valve (11) is arranged at the bottom of the heat exchange tube (1).